Home / 13,217.78-18,238.85-7,552.90

Finding the Fourth Proportional to 13,217.78, 18,238.85 and 7,552.90

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Solution

The fourth proportional to 13,217.78, 18,238.85 and 7,552.90 is: 10,422.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.78 : 18,238.85 = 7,552.90 : x
  2. Step 2: Convert to fraction form
    13,217.78/18,238.85 = 7,552.90/x
  3. Step 3: Cross multiply
    13,217.78x = 18,238.85 × 7,552.90
  4. Step 4: Simplify right side
    13,217.78x = 137,756,183.45
  5. Step 5: Solve for x
    x = 137,756,183.45/13,217.78
  6. Step 6: Final answer
    x = 10,422.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.